144 lines
3.6 KiB
PHP
144 lines
3.6 KiB
PHP
<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, 2009, Control Yourself, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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if (!defined('LACONICA')) { exit(1); }
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require_once(INSTALLDIR.'/lib/daemon.php');
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require_once(INSTALLDIR.'/classes/Queue_item.php');
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require_once(INSTALLDIR.'/classes/Notice.php');
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define('CLAIM_TIMEOUT', 1200);
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define('QUEUE_HANDLER_MISS_IDLE', 10);
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define('QUEUE_HANDLER_HIT_IDLE', 10);
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class QueueHandler extends Daemon
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{
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var $_id = 'generic';
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function __construct($id=null, $daemonize=true)
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{
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parent::__construct($daemonize);
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if ($id) {
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$this->set_id($id);
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}
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}
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function timeout()
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{
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return null;
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}
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function class_name()
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{
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return ucfirst($this->transport()) . 'Handler';
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}
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function name()
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{
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return strtolower($this->class_name().'.'.$this->get_id());
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}
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function get_id()
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{
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return $this->_id;
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}
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function set_id($id)
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{
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$this->_id = $id;
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}
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function transport()
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{
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return null;
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}
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function start()
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{
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}
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function finish()
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{
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}
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function handle_notice($notice)
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{
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return true;
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}
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function run()
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{
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if (!$this->start()) {
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return false;
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}
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$this->log(LOG_INFO, 'checking for queued notices');
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$queue = $this->transport();
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$timeout = $this->timeout();
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$qm = QueueManager::get();
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while (true) {
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$this->log(LOG_DEBUG, 'Checking for notices...');
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$notice = $qm->nextItem($queue, $timeout);
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if (empty($notice)) {
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$this->log(LOG_DEBUG, 'No notices waiting; idling.');
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// Nothing in the queue. Do you
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// have other tasks, like servicing your
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// XMPP connection, to do?
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$this->idle(QUEUE_HANDLER_MISS_IDLE);
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} else {
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$this->log(LOG_INFO, 'Got notice '. $notice->id);
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// Yay! Got one!
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if ($this->handle_notice($notice)) {
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$this->log(LOG_INFO, 'Successfully handled notice '. $notice->id);
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$qm->done($notice, $queue);
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} else {
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$this->log(LOG_INFO, 'Failed to handle notice '. $notice->id);
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$qm->fail($notice, $queue);
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}
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// Chance to e.g. service your XMPP connection
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$this->log(LOG_DEBUG, 'Idling after success.');
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$this->idle(QUEUE_HANDLER_HIT_IDLE);
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}
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// XXX: when do we give up?
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}
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if (!$this->finish()) {
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return false;
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}
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return true;
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}
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function idle($timeout=0)
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{
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if ($timeout > 0) {
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sleep($timeout);
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}
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}
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function log($level, $msg)
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{
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common_log($level, $this->class_name() . ' ('. $this->get_id() .'): '.$msg);
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}
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}
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